ZHCSLF8A June   2020  – June 2021 INA228-Q1

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements (I2C)
    7. 6.7 Timing Diagram
    8. 6.8 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Versatile High Voltage Measurement Capability
      2. 7.3.2 Internal Measurement and Calculation Engine
      3. 7.3.3 Low Bias Current
      4. 7.3.4 High-Precision Delta-Sigma ADC
        1. 7.3.4.1 Low Latency Digital Filter
        2. 7.3.4.2 Flexible Conversion Times and Averaging
      5. 7.3.5 Shunt Resistor Drift Compensation
      6. 7.3.6 Integrated Precision Oscillator
      7. 7.3.7 Multi-Alert Monitoring and Fault Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Power-On Reset
    5. 7.5 Programming
      1. 7.5.1 I2C Serial Interface
        1. 7.5.1.1 Writing to and Reading Through the I2C Serial Interface
        2. 7.5.1.2 High-Speed I2C Mode
        3. 7.5.1.3 SMBus Alert Response
    6. 7.6 Register Maps
      1. 7.6.1 INA228-Q1 Registers
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Device Measurement Range and Resolution
      2. 8.1.2 Current , Power, Energy, and Charge Calculations
      3. 8.1.3 ADC Output Data Rate and Noise Performance
      4. 8.1.4 Input Filtering Considerations
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Select the Shunt Resistor
        2. 8.2.2.2 Configure the Device
        3. 8.2.2.3 Program the Shunt Calibration Register
        4. 8.2.2.4 Set Desired Fault Thresholds
        5. 8.2.2.5 Calculate Returned Values
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 术语表
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

说明

INA228-Q1 是一款超精密数字功率监控器,配备专为电流检测应用而设计的 20 位 Δ-Σ ADC。该器件可跨共模电压支持范围为 -0.3V 至 +85V 的电阻式分流器感测元件测量 ±163.84mV 或 ±40.96mV 的满量程差分输入。

INA228-Q1 报告电流、总线电压、温度功率、能量和电荷累积,并采用精度为 ±0.5% 的集成振荡器,同时在后台执行所需的计算。集成的温度传感器用于裸片温度测量的精度为 ±1°C,并可用于监测系统环境温度。

INA228-Q1 采用低温漂和增益漂移设计,以使此器件可用于在制造过程中不进行多温度校准的精密系统。此外,非常低的失调电压和噪声允许在 mA 至 kA 感测应用中使用,并在感应分流器元件上提供宽的动态范围而不会产生显著的功率损耗。该器件的低输入偏置电流允许使用较大的电流检测电阻器,从而能够提供微安级的精确电流测量。

该器件允许选择从 50µs 到 4.12ms 的 ADC 转换时间以及从 1x 到 1024x 的采样平均值,这有助于进一步降低测量数据的噪声。

器件信息(1)
器件型号封装封装尺寸(标称值)
INA228-Q1VSSOP (10)3.00mm × 3.00mm
如需了解所有可用封装,请参阅数据表末尾的封装选项附录。
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